baber/WOPTO huggingface dataset:
Patent GB-1167078-A (GB)
Title: Seal Construction for Rotary Piston Internal Combustion Engines.
IPC: F01C19/08
Filed: 1967-09-01
Abstract: 1,167,078. Rotary-piston internal combustion engines. TOYO KOGYO K. K. and NIPPON PISTON RING K. K. Sept. 1, 1967 [Sept. 10, 1966], No.40162/67. Heading F1F. Sealing means between the end faces of a piston of a rotary-piston I. C. engine, particularly an engine having a three-sided piston planetary rotatable within a housing having a two-lobed epitrochoidal inner profile, and the adjacent end walls of the housing, includes in each piston end face an annular groove 16, Fig. 3 slidably mounting a seal ring 17, which is urged outwardly of the groove by a spring 19, wherein the radial inner face 22 of the ring includes a wear-resistant layer H of, e. g. hard chromium and the axial outer face 18 of the ring is inclined with respect to the housing end wall to provide a sharp edge at the radially innermost circumference of the face 18. The radial inner face 22 of the ring is also formed with an annular groove 20 which mounts an "O" seal ring 21. Instead of the layer H being of hard chrome the radial inner face may be sprayed with molybdenum or nitrogenized. In another construction of ring the radial inner face 22 is formed with a "V" groove to provide a knife edge at the radially innermost circumference of the face 18 with the axially outermost face of the "V" including the wear-resistant layer H. In this construction, the groove containing the "O" seal ring is provided on the radial outer face of the ring 17.
Patent GB-1511549-A (GB)
Title: Grading apparatus
IPC: B07B1/15
Filed: 1976-12-22
Abstract: 1511549 Roller separators ST NICHOLAS COURT FARMS Ltd 22 Dec 1976 [1 Oct 1975] 40208/75 Heading B2H An apparatus for grading objects, e.g. fruits and vegetables, into two sizes comprises at least two parallel rows 1, 4 of rotatable roller elements 2, 5, the outer peripheries of the roller elements being so shaped and the rows being so spaced apart that a gap 9 of predetermined cross-sectional area is defined between two adjacent rollers in one row and two adjacent rollers in the other row, and one row of roller elements carrying a number of projections 7 which revolve with the elements and project into the gaps as they do so. Thus the revolving projections tend to lift larger objects from the grading gaps 9 and keep the latter clear. The roller elements 2, 5 are in the form of plastics or rubber mouldings octagonal in shape and are carried on rotatable spindles 3, 6. The projections 7 are finger-like with a curved upper surface 8 and are secured to the rotatable spindle 6 so that they revolve with the roller elements 5. The apparatus includes a number of rows of roller elements with the projections 7 provided on alternate rows. The shapes of the roller elements 2 and 5 and the spacing apart of the spindles 3 and 6 can be varied so that gaps of increasingly larger cross-sectional area are obtained in the direction of travel of the objects to be graded. Alternatively gaps of the same area could be arranged between a number of rows and increase in subsequent rows. In a modification Figs. 3 and 4 (not shown), moulded ear-shaped projections (11) are provided on one or each side of each roller element 5.
Patent GB-836275-A (GB)
Title: Process for the production of finely divided ferromagnetic iron oxide
IPC: G11B5/706
Filed: 1957-12-30
Abstract: A volatile ferric halide such as the chloride is hydrolysed within a flame comprising a mixture of gases which burn to form water, the amount of oxygen or gas or gas mixture containing oxygen being at least sufficient to form enough water for the hydrolysis and the hydrogen or gas or gas mixture yielding or containing hydrogen being in excess of that required for said amount of water.  Suitable hydrogen-containing gases are illuminating gas and methane; air is the preferred oxygen-containing gas; diluents such as nitrogen may be added to the gases led to the flame.  The gases are preferably homogeneously mixed and led in laminar flow to the flame, and the discharge velocity from the burner may be several times the ignition velocity.  The rim of the burner may be protected from the formation of "beards" by mechanical stripping, by the use of flushing gases flowing as a thin layer past said rim or by lowering the ignition velocity of the gases in the vicinity of the rim, e.g. by introducing air into the gases at the rim.  To obtain fine particles with unsealed surfaces, the temperature of the flame is preferably kept below 1000 DEG  C., and the aerosol initially resulting from the reaction allowed to coagulate, e.g. for over 5 secs., to an aerogel, before being separated; this may be done by whirling the reaction products in a large chamber or passing through long, preferably curved tubes.
Patent GB-1116626-A (GB)
Title: Improvements in or relating to shoe shank members
Inventor: HAWKES JOHN ARTHUR
IPC: A43B23/22
Filed: 1964-10-03
Abstract: A shoe shank member for reinforcing a shoe insole consists of longitudinally extending glass fibres bonded together by a styrene acrylonitrile copolymer resin.  The stiffener is made by impregnating glass fibre roving with the resin and bonding the rovings together under heat and pressure to form a strip having a cross-section of between 0.1 and 0.04 sq. in., and a resin content of 20% to 45% by weight.  The strip is then cut to the required length and the stiffener is heated to 200 DEG C. and moulded on to the insole.  A thermoplastic adhesive may be used to improve the bond between the insole and the stiffener.
Patent GB-1240651-A (GB)
Title: Improvements in or relating to gearing
Inventor: CARTWRIGHT JOHN ANTHONY
IPC: F16H49/00
Filed: 1967-09-05
Abstract: 1,240,651. Toothed gears. PAINTON & CO. Ltd. 29 Aug., 1968 [5 Sept., 1967], No. 40426/67. Heading F2Q. Reduction gearing comprises a stationary gear 3 having facial bevel teeth 8 and a flexible driven gear 18 having teeth 19 differing in number from the teeth 8 and successively urged into tight mesh with the teeth 8 by a spring-pressed ball 31 mounted in a driving cap 24. Each gear is recessed between the root portions of adjacent teeth to accommodate the tip of a tooth of the other gear, alternatively the tips of the teeth could be rounded to provide the desired clearance. This permits tight meshing of the teeth substantially eliminating back-lash. The flexible gear 18 is integral with an output shaft 17, 13 and is moulded from nylon. The teeth 19 are individually formed with tabs 20 engaging flutes in a freely mounted dial ring 21, the flutes enabling the teeth 19 to be flexed into mesh with the stationary teeth whilst remaining engaged in the flutes. Index markings are provided around the lower portion of the cap 24 and around the dial ring 21, and a reference mark is provided on the gear 3, the position of the output shaft being indicated by movement of the indicia of the ring 21 past the reference mark. The gearing may be incorporated in the turret control head of a potentiometer.
Patent GB-1371646-A (GB)
Title: Jamming cleats
IPC: F16B2/14
Filed: 1972-11-29
Abstract: 1371646 Cleats C B COCHRANE 29 Nov 1972 [2 Sept 1971] 40908/71 Heading E2A A jamming cleat, of moulded plastics or metal, for ropes &c comprises a body portion 1 with an open ended slot 4 extending throughout its length, and one or more jaws 9 mountable so as to be longitudinal slidable in the slot. The body portion and the or each jaw are so constructed and arranged that longitudinal sliding movement of the or each jaw in the slot with respect to the body portion causes the or each jaw to move into and out of a rope gripping position, and the slot along its length between its open ends provide unimpeded access to the interior of the body portion, whereby to permit a rope or cable to be moved laterally into or out of the slot. As shown, the walls 7, 8 of the slot 4 converge and the toothed jaws are correspondingly tapered and have lugs 23, Fig. 10, which fit in guide channels 22; alternatively a single jaw holds the rope 13, Fig. 8, against a side wall 3 which is planar and roughened or toothed. In modifications, (a) the teeth 11 are inclined or curved, (b) the jaws have a plurality of individual teeth arranged in aligned or staggered rows for gripping webbing straps, (c) the jaws are connected by a resilient loop 25, Fig. 21, or a hinge unit whereby the jaws are urged against the walls 7, 8, or by flexible dowels whereby the jaws are inclined towards one another, (d) the jaws 32, 33, Fig. 26, are connected by tenons 50 and recesses 51 to a toothed carrier 34. The cleat may be releasably secured in a channel member, having curved walls 6', 7', Fig. 31, the jaws comprising a plurality of teeth hinged together and each provided with a lug engageable in a guide channel in the cleat body.
Patent GB-1062814-A (GB)
Title: Improvements in or relating to steroids and the manufacture thereof
IPC: C07D221/18
Filed: 1964-03-13
Abstract: Novel 16a -(-2-oxoethyl)-17-isopregnanes having the formulae <FORM:1062814/C2/1> <FORM:1062814/C2/2> <FORM:1062814/C2/3> wherein R is hydrogen, fluorine or methyl, R11 is hydrogen or the acyl radical of a hydrocarbon carboxylic acid containing 1-12 carbon atoms inclusive, W is hydrogen or fluorine, X1 is hydrogen, keto, a - or b -hydroxy, or X1 and W taken together represent a 9(11)-double bond, X is hydrogen, keto, a -hydroxy, b -hydroxy or a 9(11)-double bond, Y is hydrogen or acyloxy, Z is hydrogen or methyl and -C1-C2-represents -CH = CH- or - CH2-CH2-are obtained in a process which comprises subjecting a 51,61 - dihydro - androstano - [17,16a  - c]- pyran having in Ring D the configuration:  <FORM:1062814/C2/4> to aqueous acid hydrolysis to obtain the corresponding 16a -(-2-oxoethyl)-17-isopregnane.
Patent GB-1518354-A (GB)
Title: Main transmission station
IPC: H04B3/46
Filed: 1975-10-10
Abstract: 1518354 Supervising repeaters; reducing crosstalk PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 10 Oct 1975 [14 Oct 1974] 41628/75 Heading H4R Low frequency signals for control, supervisory or regulation purposes are applied to a known floating coaxial cable transmission system including repeaters via a bridge circuit which suppresses low frequency cross-talk introduced by capacitors which interconnect the floating cables with earthed cables at a main station. The simplified bridge circuit shown couples signals from the LF source 22 to floating cable 1. By choosing the components 31, 32, 34, 35 such that there is no potential difference between points S and R, cross-talk introduced via capacitor 17 which is in parallel with similar capacitors coupling the outer sleeve of similar floating cables to earth is substantially reduced. A more detailed picture of the system is given in Figure 3 (not shown).
Patent GB-1098564-A (GB)
Title: A method for producing gallium arsenide devices
Inventor: ANTELL GEORGE RICHARD
IPC: H01L29/00
Filed: 1966-09-20
Abstract: 1,098,564. Semi-conductor devices. STANDARD TELEPHONES & CABLES Ltd Sept. 20, 1966, No. 41973/66. Heading H1K A device comprising a layer of semi-insulating gallium arsenide sandwiched between two semiconducting layers is formed by one of two methods. In the first the semi-insulating layer is formed by diffusing the deep donor oxygen into a layer of P-type gallium arsenide to fully compensate the acceptor impurities in a surface region, and a P or N layer formed by diffusion of acceptor or donor into the surface of this region. In the second method, starting with an N-type layer, the semi-insulating layer is formed by diffusing oxygen and a shallow acceptor into it in such a manner as to form a surface P-type layer in which the acceptor predominates and an underlying semi-insulating layer in which the oxygen fully compensates the acceptor impurity. In an alternative method in which the N-type layer as produced contains a higher concentration of oxygen than of shallow donors the same effect is produced by diffusion of acceptor only. In both cases the treated N or P layer may be a layer epitaxially grown on an N or P-type substrate and further layers may be formed in the outer diffused layer by further diffusions. In the first method the oxygen may be diffused direct or through a deposited silicon dioxide layer, from an atmosphere of oxygen alone or mixed with argon, from water vapour, or from arsenic trioxide or gallium oxide mixed with water vapour. Alternatively the oxygen is introduced by ion bombardment or lodged in a reactively sputtered silica film prior to diffusion. In the second method the oxygen and acceptor may be simultaneously diffused from a layer of zinc-doped silica.
Patent GB-1000015-A (GB)
Title: Fastening device
IPC: F16B5/00
Filed: 1962-11-07
Abstract: 1,000,015. Spiked plates; dowels; dowelling. PARAMETRICS RESEARCH & DEVELOPMENT CO. Inc. Nov. 7, 1962 [Dec. 6, 1961; April 27, 1962], No. 42084/62. Heading F2H. A device adapted to fasten together a pair of abutting, slotted panels 12, 16 comprises a strip 10 of resilient steel having rows of individual teeth 24, 26 along the edges, each tooth having a protruding sharp edge c extending diagonally of the longitudinal axis of the strip. The teeth are formed by punching the strip, each tooth having a diagonal bend line a and knife edge c. To prevent back-out movement after assembly, one end of the strip is nailed to the members 12, 16. In a modification teeth 24, 26 in each row alternate in projecting from one side of the strip and then from the other side, a transversely extending tooth between adjacent pairs of teeth preventing back-out. In another modification, the teeth are portions of circles with the bend line as a chord of the circle, the edges of some of the teeth being diagonally inclined in opposite directions. In another modification, Fig. 11, a strip 50 has one edge slit at spaced intervals to form tongues 52, 54 between adjacent slits, the tongues being bent in opposite directions and at right angles to the plane of the strip, each tongue carrying at resilient tooth 58, 60 so that three slotted members may be joined together in the shaft of a T joint.
Patent GB-1284725-A (GB)
Title: An improved data sheet
Inventor: HEBBLETHWAITE GORDON
IPC: D03C19/00
Filed: 1968-09-07
Abstract: 1284725 Originals for photo-copying G HEBBLETHWAITE 8 Dec 1969 [7 Sept 1968] 42680/68 Heading G2M An original for photo-copying comprises a master card 10 bearing information common to all the copies to be made, and indicator cards 28, 30 bearing information corresponding to the individual copies. Indicators 28, 30 are movable with respect to master 10 to position required information in apertures 18, 20, 22, 24. Master 10 comprises a card folded in two along its edge 16 to form a front sheet 12, containing the apertures 18, 20, 22, 24, and a back sheet (14), Figs. 3A, 3B, (not shown) having slits (26 a -g) through which the indicators 28, 30 are threaded. As described, the original is for producing instruction sheets for weaving.
Patent GB-957259-A (GB)
Title: Radiometric system
IPC: G02B23/12
Filed: 1962-11-12
Abstract: 957,259. Detecting infra-red radiation. BARNES ENGINEERING CO. Nov. 12, 1962 [Dec. 4, 1961], No. 42694/62. Headings G1A and G1D. [Also in Division G2] An instrument for detecting optical radiations, particularly in the infra-red, comprises a truncated cone 6 whose inner surface is reflective to the wavelength of the radiations and a detecting element 7, such as a thermistor bolometer flake, mounted at the truncation 8, the arrangement being such that the truncation 8 forms one side of a regular polygon, termed an image polygon, centred on the apex of cone 6 if it were not truncated, and the diameter of the polygon is large compared with one of its sides, e.g. from 12 to 15 times as great. Primary mirror 1 and secondary mirror 2 may be provided, arranged so that their focal plane 9 contains the centre of the image polygon. Specifications 881,575 and 945,566 are referred to.
Patent GB-919144-A (GB)
Title: Improvements relating to guards for machine tools
Inventor: BLACKMAN PETER GEORGE
IPC: B23Q11/08
Filed: 1960-12-13
Abstract: 919,144. Machinery guards. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Sept. 29, 1961 [Dec. 13, 1960], No. 42837/60. Class 80 (4). A guard for a machine tool such as a horizontal milling machine comprises a frame having a side lying in a plane parallel to the direction of movement of the work table formed by a flexible curtain in two panel portions, each having one end secured to a fixed part 8 of the machine frame and the other end extending to an end support c or d of the guard frame. The weft members of the flexible curtain each consist of a length of flexible wire 14 which passes around a pulley 6 and a multiple groove pulley on the guard frame c or d. Vertically suspended rods 9 have apertures through which the wires 14 can pass freely and are held by loose link chains 16 secured at their ends to the part 8 and side frame members c or d. The front and side panels of the guard frame may be fitted with sliding or hinged doors with open wire mesh, each door having interlocks with the drive such that the opening of any one door causes the machine spindle to stop rotating, or to be so locked that the locks can only be opened when the machine spindle remains stationary and the spindle remains stationary until all the locks are closed.
Patent GB-1055229-A (GB)
Title: Process for the oxidation of aldehydes
IPC: C07C51/16
Filed: 1965-10-08
Abstract: In a process for the oxidation of aldehydes in an aqueous medium using cupric oxide or hydroxide and a noble metal, oxide or hydroxide as oxidizing agent, an alkaline earth metal hydroxide is present and the salt of the carboxylic acid is formed.  Silver, gold, mercury, ruthenium, rhodium, palladium, osmium, iridium and platinum are the noble metals and calcium and barium hydroxides are mentioned. In examples acrolein is oxidized.
Patent GB-1138360-A (GB)
Title: Process for the esterification of polyhydric alkanols with nitric acid
IPC: C07C201/02
Filed: 1966-09-26
Abstract: 1,138,360. Nitric esters of polyalkanols. STAMICARBON N.V. 26 Sept., 1966 [1 Oct., 1965], No. 42957/66. Heading C2C. Polyhydric alkanols are esterified with nitric acid by reacting with a nitrating acid in a liquid sulphur dioxide medium. Glycerol di- and trinitrates, ethylene glycol dinitrate and diethylene glycol dinitrate are specified and the nitrating acid is a mixture of nitric and sulphuric acid or anhydride with a preferred nitric acid content of 38-43 mol. per cent. The autogenous oxidation of liquid sulphur dioxide removes the heat generated during esterification.
Patent GB-1509777-A (GB)
Title: Sliding seal
IPC: F16J15/20
Filed: 1975-10-20
Abstract: 1509777 Sealing elements DEVENTER KG 20 Oct 1975 [20 Sept 1975] 43026/75 Addition to 1496507 Heading E1J A sliding seal comprises a resilient backing element 2 mounted on a base element 5 and covered by a low-friction layer 1 which is connected to the base element, the layer being unconnected with the backing element in the sliding zone. In Fig. 1 the backing element and base are integral. The connection is by glue, welding or stitching. The layer may be connected via an intermediate sealing element 7, the internal space 8 may be filled with air or an inert gas, or lubricant. In Fig. 6 (not shown) the backing element has spaced projections, and the layer surrounds the base and is secured by elements 10. The layer may be secured between projections Fig. 8 (not shown) or retained by a ring (15, Fig. 7).
Patent GB-975054-A (GB)
Title: Improvements in or relating to vibratory screens
IPC: B07B1/10
Filed: 1963-11-01
Abstract: 975,054. Screening apparatus. A. KOCH, [trading as INGENIEURBURO KOCH]. Nov. 1, 1963 [Nov. 2, 1962], No. 43130/63. Heading B2H. A screening box 2, mounted on rubber bearings 8 in a frame 1 and vibrated' by eccentric weights 3a and motor 3, is embraced above and below between the runs of an endless band screen 4. The screen may be of rubber or plastics and is driven continuously or intermittently in contact with the rails 7 on the screen box. The throughput is collected for lateral discharge on a shoot 10 inside the box.
Patent GB-1194136-A (GB)
Title: Method and Machine for Manufacture of Expanded Metal.
Inventor: STONE MARK M
IPC: B21D31/04
Filed: 1968-09-12
Abstract: 1,194,136. Making expanded metal; shearing. METALEX CORP. 12 Sept., 1968 [19 Oct., 1967], No. 43347/68. Headings B3A and B3W. In a method of making expanded metal having a roughened surface, sheet metal 28 is fed horizontally to an expanding ledge where it is expanded or both slit and expanded by a vertically reciprocated die which also presses the work against a vertical serrated face of a die 42 to roughen the surface. The roughened surface comprises serrations 17. The metal sheet may be pre-slit or may be sheared by the upper die member 20 which has a plane vertical face co-operating with the peaks of the ribs of the lower die member 42. The upper die member is preferably operated hydraulically and a feed mechanism comprising opposed intermittently operated rollers is operated by means of a crank 38 and eccentric 40 in sequence with the operation of the upper die member.
Patent GB-1532520-A (GB)
Title: Phosphorous-containing n-substituted tetrahalophthalimides as flame retardants
IPC: C08L77/00
Filed: 1976-10-19
Abstract: 1532520 Flame-retardant polymer compositions VELSICOL CHEMICAL CORP 19 Oct 1976 [23 Oct 1975] 43347/76 Headings C3R and C3K [Also in Division C2] Polymeric compositions comprise a polymer and, as flame retardant, a compound of formula where n=1-3; each X is Cl or Br; R is C 1-6  alkylene and each R<SP>1</SP> is C 2-6  alkyl or C 2-6  haloalkyl containing 1-3 Cl and/or Br atoms. Preferred polymers are polyurethane, polystyrene, acrylonitrile/butadiene/styrene terpolymer, epoxy resin or unsaturated polyester.
Patent GB-902608-A (GB)
Title: Improvements in the production of bulked yarns
IPC: D02G1/02
Filed: 1960-12-19
Abstract: 902,608. Finishing yarns. MOULINAGE ET RETORDERIE DE CHAVANOZ. Dec. 19, 1960 [Dec. 18, 1959], No. 43645/60. Drawings to Specification. Class 120 (3). An assembly, i.e. two yarns which are sufficiently cohesive to be processed together in subsequent textile operations, of bulked yarns of a synthetic polymer, e.g. nylon, is formed by applying high S and Z twist respectively to separate ends of a yarn having an initial low twist, fixing the high twist and then untwisting, e.g. continuously by use of a false twister, the S and Z twists being so related to each other that the tensile strengths of the resulting separate bulked yarns are equal, then doubling or otherwise combining the yarns.